Suzanne sent me information on this Energizer coupon (right side of page, in the middle)... You could combine with rebate deals at Walgreens this month for a better deal.
Edit: The Energizer rechargeable batteries and charger is priced at $9.99, with a $10 rebate. Add the $2.00 coupon for a bit of profit.
And again: I didn't realize until I went to print the coupon myself that you had to buy two Energizer products. Could still be a good deal, but a bit more complicated.